package thread;

public class SyncDemo2 {
    public static void main(String[] args) {
        Thread t1=new Thread(Boo::doSome);
        Thread t2=new Thread(Boo::doSome);
        t1.start();
        t2.start();
    }
}

class Boo {
    public static void doSome() {
        synchronized (Boo.class) {
            try {
                Thread t = Thread.currentThread();
                System.out.println(t.getName() + "正在执行doSome方法");
                Thread.sleep(3000);
                System.out.println(t.getName() + "执行doSome方法完毕");
            } catch (InterruptedException e) {
            }
        }
    }
}